Thread: Homebrew GPSDO
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Old 2nd Mar 2021, 10:51 pm   #9
jimmc101
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Join Date: Mar 2009
Location: Portsmouth, Hampshire, UK.
Posts: 674
Default Re: Homebrew GPSDO

A really cheap way to check the 10MHz would be one of the GPS modules using the u-blox NEO-7M (well under £10).
These can be programmed to give an output frequency up to 10MHz in 1Hz steps.
The catch is that there will be considerable jitter on output but averaged over a period of a few seconds or more, using a counter or by eye using an oscilloscope, sub Hz accuracy at 10MHz is easily attainable.
Programming can be done via 'u-center' software on a PC (via a USB-TTL serial converter) or using an arduino or similar.

Jim
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